High Energy Storage Density and Large Strain in Bi(Zn2/3Nb1/3)O3-Doped BiFeO3–BaTiO3 Ceramics

By Dawei Wang, Z. Fan, Wenbo Li, Di Zhou, A. Feteira, Ge Wang, S. Murakami, Shikuan Sun, Quanliang Zhao, X. Tan and 1 more. ACS Applied Energy Materials, 2018

258 citations recorded by the source corpus.

High recoverable energy density (Wrec ∼ 2.1 J/cm3) was obtained in (0.7 – x)BiFeO3-0.3BaTiO3-xBi(Zn2/3Nb1/3)O3 + 0.1 wt % Mn2O3 (BF-BT-xBZN, x = 0.05) lead-free ceramics at <200 kV/cm. Fast discharge speeds (<0.5 μs), low leakage (∼10–7 A/cm2), and small temperature variation in Wrec (∼25% from 23 to 150 °C) confirmed the potential for these BiFeO3-based compositions for use in high energy density capacitors. A core–shell microstructure composed of a BiFeO3-rich core and BaTiO3-rich shell was observed by scanning and transmission electron microscopy which may contribute to the high value of energy density. In addition, for x = 0.005, a large electromechanical strain was observed with Spos = 0.463% and effective d33* ∼ 424 pm/V, suggesting that this family of ceramics may also have potential for high strain actuators.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/0f17323f1575884bd14b29abfa3c0d7e14842b84

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In Biomedical Engineering

  1. Dawei Wang
  2. I. Reaney

In Electronic, Optical and Magnetic Materials

  1. Dejun Li
  2. A. Feteira
  3. Dawei Wang
  4. I. Reaney

In Materials Chemistry

  1. Dawei Wang
  2. A. Feteira
  3. I. Reaney
  4. Ge Wang

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